Viewing Surfaces I

Bradley Buchsbaum

2018-08-22

Plotting a Cortical Surface

white_surf <- read_surf(white_lh_asc)
#> loading /Users/bbuchsbaum/code/neurosurf/inst/testdata/std.40.lh.smoothwm.asc
white_rh_surf <-  read_surf(white_rh_asc)
#> loading /Users/bbuchsbaum/code/neurosurf/inst/testdata/std.40.rh.smoothwm.asc
p <- plot(white_surf)
rglwidget()

Adding a Color Layer to a Surface

Here we add a colors to the surface that are a function of each surface node’s x coordinate. When then map these values to a rainbow color map.

white_surf1 <- smooth(white_surf, type="taubin", lambda=.9)

open3d()
#> glX 
#>   3
xvals <- white_surf1@mesh$vb[1,]
p <- plot(white_surf1, vals=xvals, cmap=rainbow(255))
rglwidget()